Algebra
Double affine Hecke algebras, conformal coinvariants and Kostka polynomials
[Algèbres de Hecke affine double, co-invariants conformes et polynômes de Kostka]
Comptes Rendus. Mathématique, Tome 343 (2006) no. 6, pp. 383-386.

Nous étudions la classe de représentations, qui s'appelle les représentations calibrées, de l'algèbre de Hecke affine double rationnelle/trigonométrique de type GLn. Nous réalisons les modules simples calibrés comme des espaces de co-invariants construits de modules intégrables sur l'algèbre de Lie affine glˆm. En plus, nous donnons une formule de caractère de ces modules simples en terme d'une généralisation des polynômes de Kostka. Ces résultats sont conjecturés par Arakawa, Suzuki et Tsuchiya en se basant sur la théorie de champs conformes. Pour leur démonstration, nous utilisons les résultats récents de la théorie des représentations de l'algèbre de Hecke affine double. Les détails seront donnés dans des publications ultérieures.

We study a class of representations called ‘calibrated representations’ of the rational and trigonometric double affine Hecke algebras of type GLn. We give a realization of calibrated irreducible modules as spaces of coinvariants constructed from integrable modules over the affine Lie algebra glˆm. We also give a character formula of these irreducible modules in terms of a generalization of Kostka polynomials. These results are conjectured by Arakawa, Suzuki and Tsuchiya based on the conformal field theory. The proofs using recent results on the representation theory of the double affine Hecke algebras will be presented in the forthcoming papers.

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Accepté le :
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DOI : 10.1016/j.crma.2006.08.009
Suzuki, Takeshi 1

1 Research Institute for Mathematical Sciences, Kyoto University, Kyoto, 606-8502, Japan
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Suzuki, Takeshi. Double affine Hecke algebras, conformal coinvariants and Kostka polynomials. Comptes Rendus. Mathématique, Tome 343 (2006) no. 6, pp. 383-386. doi : 10.1016/j.crma.2006.08.009. http://www.numdam.org/articles/10.1016/j.crma.2006.08.009/

[1] Arakawa, T.; Suzuki, T.; Tsuchiya, A. Degenerate double affine Hecke algebras and conformal field theory (Kashiwara, M. et al., eds.), Topological Field Theory, Primitive Forms and Related Topics, The Proceedings of the 38th Taniguchi Symposium, Birkhäuser, 1998, pp. 1-34

[2] Bakalov, B.; Kirillov, A. Jr. Lecture on Tensor Categories and Modular Functors, University Lecture Series, vol. 21, Amer. Math. Soc., 2001

[3] Cherednik, I.V. Special bases of irreducible representations of a degenerate affine Hecke algebra, Funct. Anal. Appl., Volume 20 (1986) no. 1, pp. 76-78

[4] Dunkl, C.; Opdam, E. Dunkl operators for complex reflection groups, Proc. London Math. Soc., Volume 86 (2003), pp. 70-108

[5] Ram, A. Skew shape representations are irreducible, Combinatorial and Geometric Representation Theory (Seoul, 2001), Contemp. Math., vol. 325, Amer. Math. Soc., Providence, RI, 2003, pp. 161-189

[6] Suzuki, T. Rational and trigonometric degeneration of double affine Hecke algebras of type A, Int. Math. Res. Not., Volume 37 (2005), pp. 2249-2262

[7] Suzuki, T.; Vazirani, M. Tableaux on periodic skew diagrams and irreducible representations of the degenerate double affine Hecke algebras of type A, Int. Math. Res. Not., Volume 27 (2005), pp. 1621-1656

[8] Varagnolo, M.; Vasserot, E. From double affine Hecke algebras to quantized affine Schur algebras, Int. Math. Res. Not., Volume 26 (2004), pp. 1299-1333

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